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首页> 外文期刊>Restoration ecology >Do seed transfer zones for ecological restoration reflect the spatial genetic variation of the common grassland species Lathyrus pratensis?
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Do seed transfer zones for ecological restoration reflect the spatial genetic variation of the common grassland species Lathyrus pratensis?

机译：用于生态恢复的种子转移区是否反映了常见草地物种山thy豆的空间遗传变异？

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A common ecological restoration approach is the reestablishment of vegetation using seed mixtures. To preserve the natural genetic pattern of plant species local seed material should be used. Consequently, seed transfer zones (seed production areas and seed provenance regions) have been delineated for ecological restoration in Germany. Although it is assumed that these transfer zones represent genetic variation, there remains a lack of empirical data. In this study, we analyzed whether seed transfer zones reflect the genetic variation of the common grassland species Lathyrus pratensis. We sampled 706 individuals from 37 populations in Bavaria, Germany and analyzed genetic variation using amplified fragment length polymorphisms. In our study, we observed higher levels of genetic variation and fragment rarity in the southern Bavarian populations compared to northern populations. Our analyses revealed a strong genetic differentiation between southern and northern Bavarian populations delineated along the Danube River. However, seed production areas and seed provenance regions reflected genetic variation of L. pratensis only to a limited degree. Our study illustrates that the level of genetic variation within populations strongly depends on population history. Furthermore, the geomorphological and climatic attributes, which have been used to delineate seed provenance regions, do not reduce gene flow among populations. Seed collections for gene banks and seed production should comprise seeds from populations in southern and northern Bavaria representing the strong genetic variation between both regions, but prioritize southern populations due to higher levels of variation.
机译：一种常见的生态恢复方法是使用种子混合物重建植被。为了保持植物物种的自然遗传模式，应使用本地种子材料。因此，在德国划定了种子转移区（种子生产区和种子源区）以进行生态恢复。尽管假定这些转移区代表遗传变异，但仍然缺乏经验数据。在这项研究中，我们分析了种子转移区是否反映了常见草地物种山thy豆的遗传变异。我们从德国巴伐利亚州的37个人口中采样了706个个体，并使用扩增的片段长度多态性分析了遗传变异。在我们的研究中，与北部种群相比，南部巴伐利亚种群的遗传变异和片段稀少程度更高。我们的分析表明，沿多瑙河划定的南部和北部巴伐利亚种群之间存在强烈的遗传分化。然而，种子生产区域和种子出处区域仅在一定程度上反映了鼠尾草的遗传变异。我们的研究表明，种群内遗传变异的水平很大程度上取决于种群历史。此外，已用于描述种子出处区域的地貌和气候属性并未减少种群之间的基因流动。用于基因库和种子生产的种子收集品应包括来自巴伐利亚南部和北部的种群的种子，代表两个地区之间的强烈遗传变异，但由于变异程度较高，因此优先考虑南部种群。

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